Get Unreal Engine here, and access all engine features, the full suite of integrated tools, and the C++ source code for the entire engine. There are also options for custom licenses.Unreal Engine End User License Agreement for Creators: This license is free to use and 100% royalty-free you can use it to create internal or free projects, or to develop linear content or custom projects for clients, but not for publishing off-the-shelf offerings.Unreal Engine End User License Agreement for Publishing: This license is free to use and incurs 5% royalties when you monetize your game or other interactive off-the-shelf product and your lifetime gross revenues from that product exceed $1,000,000 USD.We offer a choice of licensing terms depending on your use of Unreal Engine. Unreal Engine (UE4) is a complete suite of creation tools for game development, architectural and automotive visualization, linear film and television content creation, broadcast and live event production, training and simulation, and other real-time applications.